v. t. [ imp. & p. p. Declassed p. pr. & vb. n. Declassing. ] [ Cf. F. déclasser. ] To remove from a class; to separate or degrade from one's class. North Am. Rev. [ Webster 1913 Suppl. ]

‖pos>adj. [ F. Cf. F. déclasser. ] 1. Reduced or fallen in status, social position, class or rank; fallen from a high status or rank to a lower one. [ PJC ]

2. Of inferior grade, rank, status, or prestige. [ PJC ]

n. Reduction by the government of restrictions on a classified document or weapon. [ WordNet 1.5 ]

adj. having a security classification removed so as to be open to public inspection; -- of documents or information. [ WordNet 1.5 ]

v. to lift the restriction on publication [ of documents ] by reducing or eliminating the secrecy classification of; -- usually applied to government documents classified as secret.
Syn. -- make available again. [ WordNet 1.5 ]